導火線

fuse (for explosives) / (fig.) proximate cause / the last straw

to transmit / to lead / to guide / to conduct / to direct

fire / urgent / ammunition / fiery or flaming / internal heat (Chinese medicine) / hot (popular) / classifier for military units (old) / Kangxi radical 86

FireWire (IEEE 1394 data-transfer interface)

firing line (battle) / live electrical wire

thread / string / wire / line / CL:條|条[tiao2],股[gu3],根[gen1] / (after a number) tier (unofficial ranking of a Chinese city)